Reference : A biophysical model for modulation frequency encoding in the cochlear nucleus.
Scientific congresses, symposiums and conference proceedings : Paper published in a journal
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
http://hdl.handle.net/10993/21318
A biophysical model for modulation frequency encoding in the cochlear nucleus.
English
Eguia, Manuel C. [> >]
Garcia, Guadalupe Clara mailto [University of Buenos Aires > Physics Department]
Romano, Sebastian A. [> >]
2010
Journal of physiology, Paris
104
3-4
118-27
Yes (verified by ORBilu)
International
0928-4257
1769-7115
France
Neural Coding Workshop
2007
Montevideo
Uruguay
[en] Computational neuroscience ; Auditory system ; Cochlear nucleus ; Temporal coding
[en] Encoding of amplitude modulated (AM) acoustical signals is one of the most compelling tasks for the mammalian auditory system: environmental sounds, after being filtered and transduced by the cochlea, become narrowband AM signals. Despite much experimental work dedicated to the comprehension of auditory system extraction and encoding of AM information, the neural mechanisms underlying this remarkable feature are far from being understood (Joris et al., 2004). One of the most accepted theories for this processing is the existence of a periodotopic organization (based on temporal information) across the more studied tonotopic axis (Frisina et al., 1990b). In this work, we will review some recent advances in the study of the mechanisms involved in neural processing of AM sounds, and propose an integrated model that runs from the external ear, through the cochlea and the auditory nerve, up to a sub-circuit of the cochlear nucleus (the first processing unit in the central auditory system). We will show that varying the amount of inhibition in our model we can obtain a range of best modulation frequencies (BMF) in some principal cells of the cochlear nucleus. This could be a basis for a synchronicity based, low-level periodotopic organization.
http://hdl.handle.net/10993/21318
10.1016/j.jphysparis.2009.11.014
Copyright (c) 2009 Elsevier Ltd. All rights reserved.

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